试题回顾：

假定你是李华，你校将举办音乐节。请写封邮件邀请你的英国朋友Allen参加，内容包括：
1. 时间；
2. 活动安排；
3. 欢迎他表演节目。
注意：
1. 词数100左右；
2. 可以适当增加细节，以使行文连贯。

参考范文：

Dear Allen,

How is everything going? Our school will hold a music festival next Sunday morning in the school hall. And I’m writing to invite you to join us.

The opening ceremony will start at 9:00 am, and the schoolmaster will deliver a speech. Then there will be various fantastic performances played by talented students. You are definitely welcome to show up on stage, which will add color and fun to our festival.

Looking forward to your early reply.

Best wishes,
Li Hua

解析：

首先确定提纲。先介绍写作目的，之后介绍音乐节的时间、活动安排等具体信息，最后欢迎他表演节目。
第二，根据提纲，确定关键词语，如：How is everything going? a music festival，in the school hall，The opening ceremony等。
第三，注意选用合适的连接词将各要点串联起来。
本文内容完整，详略得当。并使用了高级句式。如：You are definitely welcome to show up on stage, which will add color and fun to our festival. 定语从句。提升了文章档次。